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https://gitlab.freedesktop.org/wayland/weston
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![Pekka Paalanen](/assets/img/avatar_default.png)
When all shared/ headers are included in the same way, we can drop unnecessary include seach paths from the compiler. This include style was chosen because it is prevalent in the code base. Doing anything different would have been a bigger patch. This also means that we need to keep the project root directory in the include search path, which means that one could accidentally include private headers with #include "libweston/dbus.h" or even #include <libweston/dbus.h> IMO such problem is smaller than the churn caused by any of the alternatives, and we should be able to catch those in review. We might even be able to catch those with grep in CI if necessary. The "bad" include style was found with: $ for h in shared/*.h; do git grep -F $(basename $h); done | grep -vF '"shared/' Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
225 lines
5.2 KiB
C
225 lines
5.2 KiB
C
/*
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* Copyright © 2015 Collabora, Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "config.h"
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#include <stdint.h>
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#include <stdlib.h>
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#include <assert.h>
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#include <ctype.h>
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#include <string.h>
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#include <errno.h>
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#include <linux/input.h>
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#include <libweston/libweston.h>
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#include "compositor/weston.h"
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#include "shared/file-util.h"
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#include "libweston-internal.h"
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static char *
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encode_PAM_comment_line(const char *comment)
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{
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size_t len = strlen(comment);
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char *str = malloc(len + 2);
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char *dst = str;
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const char *src = comment;
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const char *end = src + len;
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*dst++ = '#';
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*dst++ = ' ';
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for (; src < end; src++, dst++) {
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if (*src == '\n' || !isprint(*src))
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*dst = '_';
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else
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*dst = *src;
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}
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return str;
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}
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/*
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* PAM image format:
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* http://en.wikipedia.org/wiki/Netpbm#PAM_graphics_format
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* RGBA is in byte address order.
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*
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* ImageMagick 'convert' can convert a PAM image to a more common format.
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* To view the image metadata: $ head -n7 image.pam
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*/
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static int
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write_PAM_image_rgba(FILE *fp, int width, int height,
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void *pixels, size_t size, const char *comment)
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{
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char *str;
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int ret;
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assert(size == (size_t)4 * width * height);
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ret = fprintf(fp, "P7\nWIDTH %d\nHEIGHT %d\nDEPTH 4\nMAXVAL 255\n"
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"TUPLTYPE RGB_ALPHA\n", width, height);
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if (ret < 0)
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return -1;
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if (comment) {
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str = encode_PAM_comment_line(comment);
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ret = fprintf(fp, "%s\n", str);
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free(str);
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if (ret < 0)
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return -1;
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}
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ret = fprintf(fp, "ENDHDR\n");
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if (ret < 0)
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return -1;
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if (fwrite(pixels, 1, size, fp) != size)
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return -1;
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if (ferror(fp))
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return -1;
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return 0;
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}
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static uint32_t
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unmult(uint32_t c, uint32_t a)
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{
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return (c * 255 + a / 2) / a;
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}
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static void
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unpremultiply_and_swap_a8b8g8r8_to_PAMrgba(void *pixels, size_t size)
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{
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uint32_t *p = pixels;
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uint32_t *end;
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for (end = p + size / 4; p < end; p++) {
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uint32_t v = *p;
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uint32_t a;
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a = (v & 0xff000000) >> 24;
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if (a == 0) {
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*p = 0;
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} else {
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uint8_t *dst = (uint8_t *)p;
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dst[0] = unmult((v & 0x000000ff) >> 0, a);
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dst[1] = unmult((v & 0x0000ff00) >> 8, a);
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dst[2] = unmult((v & 0x00ff0000) >> 16, a);
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dst[3] = a;
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}
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}
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}
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static void
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trigger_binding(struct weston_keyboard *keyboard, const struct timespec *time,
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uint32_t key, void *data)
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{
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const char *prefix = "surfaceshot-";
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const char *suffix = ".pam";
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char fname[1024];
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struct weston_surface *surface;
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struct weston_seat *seat = keyboard->seat;
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struct weston_pointer *pointer = weston_seat_get_pointer(seat);
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int width, height;
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char desc[512];
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void *pixels;
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const size_t bytespp = 4; /* PIXMAN_a8b8g8r8 */
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size_t sz;
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int ret;
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FILE *fp;
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if (!pointer || !pointer->focus)
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return;
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surface = pointer->focus->surface;
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weston_surface_get_content_size(surface, &width, &height);
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if (!surface->get_label ||
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surface->get_label(surface, desc, sizeof(desc)) < 0)
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snprintf(desc, sizeof(desc), "(unknown)");
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weston_log("surface screenshot of %p: '%s', %dx%d\n",
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surface, desc, width, height);
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sz = width * bytespp * height;
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if (sz == 0) {
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weston_log("no content for %p\n", surface);
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return;
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}
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pixels = malloc(sz);
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if (!pixels) {
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weston_log("%s: failed to malloc %zu B\n", __func__, sz);
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return;
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}
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ret = weston_surface_copy_content(surface, pixels, sz,
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0, 0, width, height);
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if (ret < 0) {
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weston_log("shooting surface %p failed\n", surface);
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goto out;
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}
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unpremultiply_and_swap_a8b8g8r8_to_PAMrgba(pixels, sz);
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fp = file_create_dated(NULL, prefix, suffix, fname, sizeof(fname));
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if (!fp) {
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const char *msg;
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switch (errno) {
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case ETIME:
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msg = "failure in datetime formatting";
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break;
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default:
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msg = strerror(errno);
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}
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weston_log("Cannot open '%s*%s' for writing: %s\n",
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prefix, suffix, msg);
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goto out;
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}
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ret = write_PAM_image_rgba(fp, width, height, pixels, sz, desc);
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if (fclose(fp) != 0 || ret < 0)
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weston_log("writing surface %p screenshot failed.\n", surface);
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else
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weston_log("successfully shot surface %p into '%s'\n",
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surface, fname);
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out:
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free(pixels);
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}
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WL_EXPORT int
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wet_module_init(struct weston_compositor *ec,
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int *argc, char *argv[])
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{
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weston_compositor_add_debug_binding(ec, KEY_H, trigger_binding, ec);
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return 0;
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}
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